[flashrom] Flashrom failed on Axiomtek eBOX620-823 embedded computer
Kenneth Frost
kfrost at oemcontrols.com
Wed Sep 7 15:04:06 CEST 2011
Hi David,
I will take a look at the GPIO controls for this chip set.
Is it possible that the newer version of flashrom version 0.9.4-r1394
has this chip set in it?
Regards,
Ken Frost
On 09/06/2011 08:33 PM, David Hendricks wrote:
> On Tue, Sep 6, 2011 at 2:13 PM, Kenneth Frost <kfrost at oemcontrols.com
> <mailto:kfrost at oemcontrols.com>> wrote:
>
> Greetings,
>
> I tried to flash this system with an updated bios using flashrom
> utility. The flash chip found was a "SST 49LF008A". I
> successfully read the flash to a filename, verified the image read
> and determined the flash chip on the board.
>
>
> Hi Ken,
> I would guess that there is some GPIO-controlled write protection
> mechanism enabled on that board. Sometimes you can disable these thru
> BIOS settings, though it's entirely up to the vendor whether or not to
> expose that.
>
> Of course, rebooting and toggling that setting in the BIOS is sort of
> a pain and probably unfeasible if you wish to support more than a
> small handful of motherboards. So it's usually preferable to toggle
> that setting in Flashrom. In Flashrom's board_enable.c file, you'll
> see several routines which do things like raise a GPIO to disable
> write protection. You'll probably need to do something similar for
> your board.
>
> If you're reasonably familiar with the chipset you're using
> (SCH US15WPT), you can try to determine the write protection setting
> experimentally. Here is one example of how to do it:
> http://www.coreboot.org/pipermail/coreboot/2009-September/051987.html .
>
> Much of the tedious info such gathering and calculating base addresses
> and offsets can be found from flashrom verbose output when you perform
> a read operation. iotools <http://code.google.com/p/iotools/> can also
> make your life easier when doing simple low-level operations.
>
> --
> David Hendricks (dhendrix)
> Systems Software Engineer, Google Inc.
--
OEM CONTROLS Inc.
10 Controls Drive work: (203) 929-8431
Shelton, CT 06484 email: kfrost at oemcontrols.com
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